Doctor Who: The Doctor, the Widow, and the Wardrobe

Madge Arwell and her kids escape war-torn London to a house in Dorset, where a young caretaker who calls himself the Doctor is keeping house, sort of. Madge doesn't want to ruin Christmas for Lily and Cyril by telling them that their father may have been lost in an air fight over the English Channel. The Doctor gives the Arwells a mysterious gift that leads them into a magical world where the family has to be brave for their wishes to come true.